Ryan,
The problem is that your <xsl:param>  is wrongly placed.<xsl:param> is a top 
level element ie, child of <xsl:stylesheet>  element or if it is in a 
template then it must be the immediate child of the <xsl:template>  element. 
so in your case, because you have an <xsl:variable>  element before the 
<xsl:param>  element, its reporting the error message.


> From: "Ryan Beesley" <RBeesley@[...].org>
> Reply-To: xsl-list@[...].com
> To: <XSL-List@[...].com>
> Subject: [xsl] Error xsl:param may not be used here
> Date: Mon, 14 Oct 2002 03:46:46 -0500
> 
> Repost:  Sorry, I posted the first message as a reply...
> 
> I know that this error has been addressed on this list before, but I don't
> think it has been answered in this context.
> 
> I have been working on a set of svg graphing (xslt) utilities that I'd like
> to make publicly available once my senior design project is complete, but
> I've run into a slight snag.  I wanted to be able to customize different
> parameters in multiple ways.  Below is listed a small segment of my xml and
> xslt.
> 
> ---- graph.xml ----
> <?xml version="1.0" encoding="UTF-8"?>
> <graph type="pie">
>   <!-- Graph data goes here -->
> </graph>
> 
> ---- graph.xslt ----
> <?xml version="1.0" encoding="UTF-8"?>
> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
>   <xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
> 
>   <xsl:template match="graph">
>    <xsl:call-template name="drawGraph">
>     <!-- Optional parameters to alter graph -->
>     <xsl:with-param name="type" select="'bar'"/>
>    </xsl:call-template>
>   </xsl:template>
> 
>   <xsl:template name="drawGraph">
>    <xsl:variable name="graph" select="." />
>    <xsl:param name="type">
>     <xsl:choose>
>      <xsl:when test="not(string-length($graph/@type) = 0)">
>       <xsl:value-of select="$graph/@type" />
>      </xsl:when>
>      <xsl:otherwise>x-y</xsl:otherwise>
>     </xsl:choose>
>    </xsl:param>
>    <type>
>     <xsl:value-of select="$type"/>
>    </type>
>   </xsl:template>
> 
> </xsl:stylesheet>
> 
> ---- output.xml ----
> <?xml version="1.0" encoding="UTF-8"?>
> <type>bar</type>
> 
> Although you would probably never include a parameter in both the calling
> template and the xml data, I have included both to demonstrate the use.  
> The
> passed template param should win however.  When evaluating this with XML
> Spy, in debug mode, it works exactly as I want it too.  I can change the
> value of @type either while calling the template, or directly from the xml
> data.  If neither parameter was provided, the template assumes a default.
> 
> Xalan and MSXML fail completely.  If I place my params inside the choose,
> then they aren't recognized, as should be, but it doesn't seem to like my
> nested choose for the param either.  I suspect that this structure is the
> source of my error: xsl:param may not be used here.
> 
> If anyone has suggestions as to how I can make this work, I'm always eager
> to learn.  I believe I could use a variable to make this work, but then I
> wouldn't be able to change it from the template, right?
> 
> Ryan Beesley
> Rbeesley@[...].org
> Founder, Atum Innovations
> 
> 
> 
>   XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list




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